52216722 has 12 divisors (see below), whose sum is σ = 113136270. Its totient is φ = 17405568.

The previous prime is 52216699. The next prime is 52216727. The reversal of 52216722 is 22761225.

It can be written as a sum of positive squares in only one way, i.e., 50253921 + 1962801 = 7089^2 + 1401^2 .

It is not an unprimeable number, because it can be changed into a prime (52216727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1450447 + ... + 1450482.

Almost surely, 2^52216722 is an apocalyptic number.

52216722 is an abundant number, since it is smaller than the sum of its proper divisors (60919548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52216722 is a wasteful number, since it uses less digits than its factorization.

52216722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2900937 (or 2900934 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 52216722 is about 7226.1138933731. The cubic root of 52216722 is about 373.7689336911.

Adding to 52216722 its reverse (22761225), we get a palindrome (74977947).

The spelling of 52216722 in words is "fifty-two million, two hundred sixteen thousand, seven hundred twenty-two".